giuffre



A. A. GIUFFRE Jan. 31, 1956 HAIR DRYERS Filed July 15, 1953 INVENTOR. ANTHONY A. GIUFFRE ATTORNEY United States Patent HAIR DRYERS Anthony A. 'Giuflre, Milwaukee, Wis. Application July .15, 1953, Serial No. 368,1)92 Claims. (CI. 34-50) My invention relates to hair dryers and more particularly to hair dryers employing a refrigeration principle within a hood.

The object of my invention is to provide a unit in which a suction fan conveys a. flow of air through a filter, into an enclosure equipped with an evaporator coil .and a secondary condenser, and returning it past a primary condenser provided with a reflectorplate .for radiating heat toward the head of the user.

It is manifest to anyone familiar with'hair dryers'that the conventional dryer comprises a heating'element and a fan, and that the'drying process consists in blowing heated air at a. predetermined temperature directly toward the head of the user, bysneans of the fan.

The device described and claimed herein eliminates the warm or hot air being forced onto the hair, and produces a drying 'eiiect by the use of a refrigerant circulated by means of a motor driven compressor, .in combination with a suction fan for conveying the air.

Other and further objects of my invention will become more apparent as the description proceeds when taken in conjunction with the drawings in which:

Figure l is a fragmentary, cross-sectional view of the hood pivotally mounted on a tubular, vertical standard.

Figure 2 is a fragmentary, cross-sectional View of a portion of the vertical standard supported -by a pedestal or base, and showing an enclosure containing a motor driven compressor and reservoir for the liquid refrigerant employed in the operation of the device, and

Figure 3 is a schematic circuit layout of the component parts constituting the device and showing their relation to one another.

Similar characters of reference indicate corresponding parts throughout the several views, and referring :now to the same, the character ,shows a hood which is of semi-circular con-tour at its top, and is open at its lower end 11, the outer wall of the hood 10 being curved inwardaroundits entire periphery at 12. The top of the hood 10 is inwardly disposed at 13.

There is an enclosure formed by the wall 14 which encloses a condenser consisting of a continuous tube 15, and an evaporator consisting of the tube 16, and a motor 17 is mounted outside of the hood 10 within the recess 13. This motor, obviously, is provided with a shaft 18 which extends through the wall of the hood to the enclosure formed by the wall 14, and a fan hlade 19 is attached to the shaft 18 below the evaporator coil 16. The condenser tube and the evaporator tube 16 are connected by means of a capillary tube shown as 20.

The bottom of the enclosure formed by the wall 14, having a condenser tube and an evaporator tube therein, is perforated at 21, and has inwardly extending tubes 22 which are provided with caps 23 disposed over and above the tubes 22, and an air filter unit 24 is placed against the bottom of the enclosure, and there is an angularly disposed plate 25 terminating into a straight partition portion 26. These plates 25 are provided with inwardly extending end of the motor 2 bafiles 27 extending inwardly toward the hood, the plate 25 radiating heat from the primary condenser tubes 28, which are disposed against the inner surface thereof.

The hood 10 is provided with a bracket 29 extending outward therefrom, and is hingedly supported at 30 to the upper end of a tubular, vertical standard 31 which is supported by a hollow base 32 which acts as a reservoir for the condensation, and a drain 33 is shown disposed through the side wall 34 at a point even with the bottom plate 35.

There is another enclosure 36 having a motor driven compressor 37 and a reservoir tank (not shown) for the refrigerant, and a relay 38 is shown at its top. In Fig. 3 I show a schematic layout of the entire wiring circuit of the unit having current supply leads 39 and 40 and their connections to the compressor which is shown as 37, the fan 41, the humidity control 42, and the relay 38. The entire circuit is controlled by means of the switch 43.

The hollow, tubular, vertical standard 31 encases supply line 49. from the compressor 37, and also the return 50 to the. reservoir, and also a drain 51 from the enclosure 14 .to the bottom of the tank in the 'base 32. These hollow, tubular members are .flexible tubes, and the enclosure 36 is shown supported by and attached to the vertical standard 31 by means of a bracket 52 held by bolts 53, or in any other convenient manner.

The operation of the device and its function is as follows: The hood 10 is placed over the head of the person having her hair dried. The fan 23 is driven by the motor 17 and draws the moist air from the hair, and filters it through the filter 24 and draws it up between the evaporator and condenser coils from where it is directed downward between the shell of the hood 10 and the inner shell 25, and it is circulated upward at 12 as shown :by the arrows. The primary condenser 28 deflects the heat to the shell 25 and the bafiies 27 reflect the heat toward the hair of the person under the hood. The surplus moisture is drained over the caps 23 and is drained to the tank in the base 32 by the tube 51.

The refrigerant within the reservoir (not shown) in 1theenclosure36 obviously is pumped up by the compressor 37 which is also disposed within the enclosure 36 through Ihe'tube 49 :to the condenser tube 15 and from these tubes 15 to the primary condenser 28 back through the capillary .tube 20 toward the evaporator tubes 16 within the enclosure and back to the reservoir in the enclosure 36 by means of the tube 5.0;

The relay 38 is shown mounted on top of the enclosure 36, but may be placed at any convenient location. This is also true of the humidity control shown as 42 in the schematic view.

...Due to the fact that the entire hood 10 may be swiveled at 30, it is manifest that all tubes be flexible. Also, if the vertical standard 31 is to be constructed of a plurality of tubes telescopically engaging one another to permit raising or lowering the hood 10, the tubular members Within the vertical standard need be flexible. However, this feature is common practice and is not a part of my invention.

The device as shown is assembled of a plurality of units which, in combination, function to produce a means of drying hair without intense heat radiated from a resistance coil, which is common practice, and although I have shown a particular arrangement of the component parts constituting my particular device, I am fully cognizant of the fact that many changes in their form and arrangement may be made, without affecting their operativencss and without departing from the spirit of the invention or the scope of the appended claims.

Having thus described my invention what I claim and desire to secure by Letters Patent in the United States is:

l. A hair drying device of the character described comprising in combination, a hood open at its lower end, the open end of said hood having the outer edge turned upward toward the inside thereof, a vertical standard supported by a base, said hood pivotally mounted to said standard, said hood equipped with a motor driven suction fan, a filter unit disposed within said hood between said fan and the open end of said hood, a shell extending from said filter to the inward ends of said hood and spaced inwardly from the wall of said hood, an enclosure disposed within said hood between the filter and the closed upper end of said hood, said enclosure having apertures through its top and bottom walls, acondensation'coil and an evaporator coil disposed within said enclosure between said fan and the perforated upper wall of the enclosure, a primary condenser coil disposed adjacent to said inner shell between said shell and hood, said primary condenser coil connected by tubular means to said first mentioned condenser coil within said enclosure, in combination with a reservoir, a compressor, a humidity control, and a relay, all connected in a circuit with said motor driven fan, and actuated by a current supply, and tubular means for draining the condensation from said enclosure.

2. A device of the character described for drying hair, said device comprising in combination, a semi'spherical hood, the edge of the open end of said hood turned upward inside, a tubular vertical standard supported by a hollow base, said hood pivotally mounted to the upper end of said tubular vertical standard, a motor driven suc tion fan disposed within said hood, a filter unit in alignment with the open end of said hood below said fan, an inner shell within said hood, said shell spaced inwardly in the inner surface of said hood and extending from said filter toward the open end thereof, an enclosure supported within said hood between the top thereof and the filter, said enclosure provided with apertures through its upper and lower wall, an evaporator coil, a condenser coil, a capillary coil connecting said evaporator and condenser coils, all of said coils disposed within said enclosure above said fan, a primary condenser coil adjacent to said inner shell between the inner shell and hood, said primary condenser connected to the condenser in said enclosure, in combination with a reservoir, a compressor, a humidity control, and a relay, all connected in circuit with said motor driven fan and actuated by a currentv supply, and tubular means for draining the condensation from said enclosure.

3. A hair drying device of the character described comprising in combination, a semi-spherical hood open at its lower end, the open ends of said hood turn upward on its peripheral edge toward the inside thereof, a vertical standard supported by a hollow base, said hood pivotally mounted to the upper end of said vertical standard, said hood equipped with a motor driven suction fan, a filter unit in alignment with the open end of said hood below said fan, an inner shell within said hood, said shell spaced inward from the inner surface of said hood and extending from said filter toward the open end of said hood, an enclosure disposed within said hood between said filter and the closed upper end of said hood, said enclosure having apertures through its top and bottom wall, a condensation coil, and an evaporator coil disposed within said enclosure between said fan and the perforated upper wall thereof, a primary condenser coil disposed adjacent to said inner shell, between said shell and hood, said primary condenser coil connected by tubular means to said first mentioned condenser mounted within said enclosure, in combinationwith a reservoir, a compressor, a relay, and a humidity control, all connected in one circuit with said motor driven fan, and actuated by means of a current supply, and tubular means employed for draining the condensation from said enclosure to said hollow base.

4. A hair drying device of the character described comprising, a hood open at its lower end, the open end of said hood turned upward inwardly along its peripheral edge, a vertical standard, a base supporting said standard, said base being hollow to form a tank, said hood pivotally mounted to said vertical standard at its upper end, a motor driven suction fan disposed within said hood, a filter unit in alignment with the open end of said hood, below said fan, an inner shell extending from said filter to the inwardly turned end of said hood, and spaced inwardly from the wall of said hood, an enclosure supported within said hood between the top thereof and the filter, said .enclosure provided with apertures through its upper and lower wall, an evaporator coil, a condenser coil, a capillary coil connecting said evaporator and condenser coils, all of said coils disposed within the enclosure above said fan, a primary condenser coil adjacent to said inner shell between the inner shell and the hood, said primary condenser connected to the condenser within said enclosure, in combination with a reservoir, a compressor, a humidity control, and a relay, all connected in one circuit with said motor driven fan, and actuated by a current supply, and tubular means for draining the condensation from said enclosure to the tank in the bottom of said base.

5. A hair drying device of the character described comprising in combination, a hood open at its bottom having its upper end in semi-circular contour, the edge of the open end of said hood turned upward toward the inside on its outer periphery, a tubular vertical standard supported by a hollow base, said hood pivotally mounted to the upper end of said vertical standard, a motor driven suction fan disposed within said hood, a filter unit disposed within said hood between said fan and the open end of said hood, an inner shell within said hood, said shell spaced inwardly from the inner surface of said hood, and extending from said filter downward toward the open end of said hood, an enclosure disposed within said hood between said filter and the closed upper end of said hood, said enclosure having apertures through its top and bottom, an evaporator coil, a condenser coil, and a capillary coil' connecting said evaporator and condensercoils, all said coils disposed within said enclosure above said fan, a primary condenser coil disposed adjacent to said inner shell between said shell and hood, said primary condenser coil connected by tubular means to said first mentioned condenser coil within said enclosure,

in combination with a reservoir, a compressor, a humidity control, and a relay, all connected in one circuit with said motor driven fan, and actuated by a current supply, and tubular means for draining the condensation from said enclosure to the hollow base of said vertical standard.

References Cited in the file of this patent UNITED STATES PATENTS 

